add docker image

.github/workflows/docker-publish.yml

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+name: Docker
+
+on:
+  push:
+    branches:
+      - 'main'
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log into registry ${{ env.REGISTRY }}
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: ./
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

Dockerfile

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+FROM alpine:latest
+
+ARG PB_VERSION=0.22.14
+
+RUN apk add --no-cache \
+    unzip \
+    ca-certificates
+
+ADD https://github.com/pocketbase/pocketbase/releases/download/v${PB_VERSION}/pocketbase_${PB_VERSION}_linux_amd64.zip /tmp/pb.zip
+RUN unzip /tmp/pb.zip -d /pb/
+
+COPY ./pb_migrations /pb/pb_migrations
+
+EXPOSE 8090
+
+CMD ["/pb/pocketbase", "--dir", "pb_data", "serve", "--http=0.0.0.0:8090"]